http://www.footloose.com/tours/fne.html
We went with Footloose to Chile/Argentina on a 20 day trek trip a few years ago so I was looking them up again for another trip and found this. Maybe these "tours" have been around awhile but it's the first time I've seen a tour that was all about hiking the AT. Knowing the equipment they use and how you're fed I can't imagine how that would work on the AT without sherpas!